!<template>
  <div class="login_container">
      <div class="login_box">
          <div class="avatar_box">
              <img src="../assets/logo.png" alt="">
          </div>
          <!-- 登录表单区 -->
          <el-form :rules="loginFormRules" ref="loginFormRef" :model="loginForm" class="login_form" label-width="0px">
              <!-- 用户名 -->
            <el-form-item prop="username">
                <el-input v-model="loginForm.username" prefix-icon="el-icon-s-custom"></el-input>
            </el-form-item>
            <!-- 密码 -->
            <el-form-item prop="password">
                <el-input type="password" v-model="loginForm.password" prefix-icon="el-icon-s-cooperation"></el-input>
            </el-form-item>
            <!-- 按钮区域 -->
            <el-form-item class="btns">
                <el-button type="primary" @click="login">登录</el-button>
                <el-button type="info" @click="reset">重置</el-button>
            </el-form-item>

          </el-form>

      </div>

  </div>
</template>

<script>
export default {
    data(){
        return{
            // 登录表单的数据绑定对象
            loginForm:{
                username:'',
                password:''
            },
            // 表单验证规则对象
            loginFormRules:{
                // 验证用户名是否合法
                username:[
                    {required: true, message:"请输入登录名称",trigger:"blur"},
                    {min:3,max:10,message:"长度在3到10个字符之间",trigger:"blur"}
                ],
                // 验证密码是否合法
                password:[
                    {required: true, message:"请输入密码",trigger:"blur"},
                    {min:6,max:15,message:"长度在6到15个字符之间",trigger:"blur"}
                ]
            }
        }
    },
    methods:{
        reset(){
            this.$refs.loginFormRef.resetFields();
        },
        login(){
            // validate方法為驗證表單內容
            this.$refs.loginFormRef.validate(async valid=>{
                if(!valid) return;
                // 驗證成功則向後端發送請求
                const {data:res} =await this.$http.post('login',this.loginForm)
                if(res.meta.status != 200) return this.$message.console.error('登录失败');
                this.$message.success('登录成功')
                window.sessionStorage.setItem('token',res.data.token)
                this.$router.push('/home')

            })

        }
    }

}
</script>

<style lang="less" scoped>
.login_container{
    background-color: #2b4b6b;
    height: 100%;
}
.login_box{
    width: 450px;
    height: 300px;
    background-color: #fff;
    border-radius: 3px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%,-50%);

    .avatar_box{
        height: 130px;
        width: 130px;
        border: 1px solid #eee;
        border-radius: 50%;
        padding: 10px;
        box-shadow: 0 0 10px #ddd;
        position: absolute;
        left: 50%;
        transform: translate(-50%,-50%);
        background-color: #eee;
        img{
            width: 100%;
            height: 100%;
            border-radius: 50%;
            background-color: #eee;

        }
    }
}

.btns{
    display: flex;
    justify-content: flex-end;
}

.login_form{
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box;
}

</style>